Home / 15,821.73-21,836.25-9,855.27

Finding the Fourth Proportional to 15,821.73, 21,836.25 and 9,855.27

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Solution

The fourth proportional to 15,821.73, 21,836.25 and 9,855.27 is: 13,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.73 : 21,836.25 = 9,855.27 : x
  2. Step 2: Convert to fraction form
    15,821.73/21,836.25 = 9,855.27/x
  3. Step 3: Cross multiply
    15,821.73x = 21,836.25 × 9,855.27
  4. Step 4: Simplify right side
    15,821.73x = 215,202,139.54
  5. Step 5: Solve for x
    x = 215,202,139.54/15,821.73
  6. Step 6: Final answer
    x = 13,601.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.